US4556595A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure-sensitive adhesive sheet structure having relocatable properties
Assignee: Nippon Carbide Industries Co Inc
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Filing: 1982-07-13
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Granted: 1985-12-03
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Expires: 2002-07-13
Abstract
Abstract A pressure-sensitive adhesive sheet structure having relocatable properties composed of a pressure-sensitive adhesive layer and non-adhesive solid particles; characterized in that the non-adhesive solid particles having a diameter smaller than the thickness of the adhesive layer and an average diameter of less than 10 mu are randomly but uniformly distributed over the surface of the adhesive layer, or are randomly but uniformly distributed and partially or fully embedded in the surface layer of the adhesive layer.
Inventors
- 👤 Katsura Ochi
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 06:57
CPC Classifications
C; C09; C09J; C09J7/00; C09J7/30; C09J7/38; C09J7/10; Y; Y10; Y10T; Y10T428/00; Y10T428/24; Y10T428/24355; Y10T428/24372; Y10T428/24405; Y10T428/24942; Y10T428/2495; Y10T428/25; Y10T428/254; Y10T428/256; Y10T428/257; Y10T428/28; Y10T428/2852; Y10T428/2861
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
87 words
A pressure-sensitive adhesive sheet structure having relocatable properties comprising a pressure-sensitive adhesive layer and a layer of non-adhesive solid particles; said solid particles having a diameter smaller than the thickness of the adhesive layer and an average diameter of less than 10μ and said solid particles in said layer being randomly but uniformly distributed over the surface of the adhesive layer, wherein the ratio of the thickness in μ of the adhesive layer to the average diameter in μ of the solid particles is at least 2.
Claim 2
Dependent Claim
87 words
A pressure-sensitive adhesive sheet structure having relocatable properties comprising a pressure-sensitive adhesive layer and a layer of non-adhesive solid particles; said solid particles having a diameter smaller than the thickness of the adhesive layer and an average diameter of less than 10μ and said solid particles in said layer being randomly but uniformly distributed over the surface of the adhesive layer, wherein the ratio of the thickness in μ of the adhesive layer to the average diameter in μ of the solid particles is at least 2.
Claim 3
Dependent Claim
18 words
The structure of claim 1 wherein the average diameter of said solid particles is not more than 6μ.
Claim 4
Dependent Claim
33 words
The structure of claim 1 or 2 wherein the ratio of the thickness in μ of the adhesive layer to the average diameter in μ of the solid particles is at least 10.
Claim 5
Dependent Claim
17 words
The structure of claim 1 wherein the thickness of the adhesive layer is from 10 to 100μ.
Claim 6
Dependent Claim
28 words
The structure of claim 1 wherein said solid particles are neither collapsible nor fragile under conditions employed for pressure-bonding said sheet structure to a desired site of bonding.
Claim 7
Dependent Claim
44 words
The structure of claim 1 wherein the pressure-sensitive adhesive layer is comprised of a pressure-sensitive adhesive having tackiness at room temperature and selected from the group consisting of natural rubber adhesives, synthetic rubber adhesives acrylic adhesives, vinyl acetate adhesives, urethane adhesives, and mixtures thereof.
Claim 8
Dependent Claim
18 words
The structure of claim 6 wherein the pressure-sensitive adhesive is a natural rubber adhesive or synthetic rubber adhesive.
Claim 9
Dependent Claim
13 words
The structure of claim 6 wherein the pressure-sensitive adhesive is an acrylic adhesive.
Claim 10
Dependent Claim
13 words
The structure of claim 6 wherein the pressure-sensitive adhesive is an acetate adhesive.
Claim 11
Dependent Claim
13 words
The structure of claim 6 wherein the pressure-sensitive adhesive is a urethane adhesive.
Claim 12
Dependent Claim
23 words
The structure of claim 1 wherein at least some of the solid particles are uniformly distributed on the surface of the adhesive layer.
Claim 13
Dependent Claim
24 words
The structure of claim 1 wherein at least some of the solid particles are partially embedded in the surface layer of the adhesive layer.
Claim 14
Dependent Claim
23 words
The structure of claim 1 wherein at least some of the solid particles are embedded in the surface layer of the adhesive layer.
References Cited (Backward Citations)
US3146799A
Cited
US3331729A
Cited
US3301741A
Cited
US3314838A
Cited
US4150187A
Cited
US4223067A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1988-12-02 | 1989-06-03 | 1989-12-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1992-12-02 | 1993-06-03 | 1993-12-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1996-12-02 | 1997-06-03 | 1997-12-03 | $7700.00 | Window Closed / Lapsed |